🚨Drilling out metal posts carries with it a high risk of iatrogenic damage in the form of a root perforation as the bur tip tends to ‘skid off’ the relatively hard post into the surrounding softer tooth tissue. Even if post removal is successful without perforation, often a substantial amount of dentine is lost, weakening the tooth further (predisposing it to root fracture), and an irregular-shaped post space is produced which may complicate further restorative procedures.
🛫Let’s examine this case now.
✔️A crack was discovered between the two mesial canals after the metal post was removed. (It is also suspected that this area is an isthmus)
✔️CBCT revealed no evidence of the fracture line spreading to the root surface.
✔️The decision was made to use MTA to cover the crack line.
✔️Fiber was used to strengthen the furcation area that was weakened
✔️A high-fill composite was used to finish the bio-base
✔️Resin-containing ceramics were used for the final restorations. Voco Grandio A2 LT (Flexural strength (biaxial) 333 MPa; compressive strength 530 MPa)
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